• jochen's avatar
    When reading the map from a live object, use a barrier load · b7caca9f
    jochen authored
    It could happen that we shrink a live object on the main thread (e.g.
    MigrateFastToSlow) while we're sweeping the same page. The main
    thread first creates a filler object that the release-stores the new
    map. Therefore it's important to barrier load the map word of live
    objects from the sweeper thread.
    
    BUG=none
    R=ulan@chromium.org,hpayer@chromium.org
    LOG=n
    
    Review URL: https://codereview.chromium.org/797623002
    
    Cr-Commit-Position: refs/heads/master@{#25780}
    b7caca9f
mark-compact.cc 142 KB